The PROactive instruments to measure physical activity in patients with chronic obstructive pulmonary disease

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• dc.contributor.author Gimeno Santos, Elena, 1980-ca
• dc.contributor.author Serra, Ignasica
• dc.contributor.author Basagaña Flores, Xavierca
• dc.contributor.author García Aymerich, Judithca
• dc.contributor.author PROactive consortiumca
• dc.date.accessioned 2016-05-31T14:24:34Z
• dc.date.available 2016-05-31T14:24:34Z
• dc.date.issued 2015
• dc.description.abstract No current patient-centred instrument captures all dimensions of physical activity in chronic obstructive pulmonary disease (COPD). Our objective was item reduction and initial validation of two instruments to measure physical activity in COPD.Physical activity was assessed in a 6-week, randomised, two-way cross-over, multicentre study using PROactive draft questionnaires (daily and clinical visit versions) and two activity monitors. Item reduction followed an iterative process including classical and Rasch model analyses, and input from patients and clinical experts.236 COPD patients from five European centres were included. Results indicated the concept of physical activity in COPD had two domains, labelled "amount" and "difficulty". After item reduction, the daily PROactive instrument comprised nine items and the clinical visit contained 14. Both demonstrated good model fit (person separation index >0.7). Confirmatory factor analysis supported the bidimensional structure. Both instruments had good internal consistency (Cronbach's α>0.8), test-retest reliability (intraclass correlation coefficient ≥0.9) and exhibited moderate-to-high correlations (r>0.6) with related constructs and very low correlations (r<0.3) with unrelated constructs, providing evidence for construct validity.Daily and clinical visit "PROactive physical activity in COPD" instruments are hybrid tools combining a short patient-reported outcome questionnaire and two activity monitor variables which provide simple, valid and reliable measures of physical activity in COPD patients.ca
• dc.description.sponsorship This study was supported by the European Commission Innovative Medicines Initiative Joint Undertaking (IMI JU #115011). This project was supported by the National Institute for Health Research Respiratory Biomedical Research Unit at the Royal Brompton and Harefield NHS Foundation Trust and Imperial College (London, UK) who part-fund Michael I. Polkey’s salary.
• dc.format.mimetype application/pdfca
• dc.identifier.citation Gimeno-Santos E, Raste Y, Demeyer H, Louvaris Z, de Jong C, Rabinovich RA et al. The PROactive instruments to measure physical activity in patients with chronic obstructive pulmonary disease. European respiratory journal. 2015; 46(4): 988-1000. DOI 10.1183/09031936.00183014ca
• dc.identifier.doi http://dx.doi.org/10.1183/09031936.00183014
• dc.identifier.issn 0903-1936
• dc.identifier.uri http://hdl.handle.net/10230/26788
• dc.language.iso engca
• dc.publisher European Respiratory Societyca
• dc.relation.ispartof European respiratory journal. 2015; 46(4): 988-1000
• dc.rights © ERS 2015. ERJ Open articles are open access and distributed under the terms of the Creative Commons Attribution Non-Commercial Licence 4.0ca
• dc.rights.accessRights info:eu-repo/semantics/openAccessca
• dc.rights.uri https://creativecommons.org/licenses/by-nc/4.0/ca
• dc.subject.other Pulmons -- Malalties obstructivesca
• dc.title The PROactive instruments to measure physical activity in patients with chronic obstructive pulmonary diseaseca
• dc.type info:eu-repo/semantics/articleca
• dc.type.version info:eu-repo/semantics/publishedVersionca